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Re: Concavenator corcovatus, a new humped carcharodontosaurid from Las Hoyas



Maybe this means that Greg Paul's early drawing of a feathered Allosaurus 
hunting some Diplodocus (shown in his autobiography on his website) wasn't too 
inaccurate after all. ;)

Zach


________________________________
From: David Krentz <ddkrentz@charter.net>
To: DML <dinosaur@usc.edu>
Sent: Wed, September 8, 2010 2:11:25 PM
Subject: Re: Concavenator corcovatus, a new humped carcharodontosaurid from Las 
Hoyas

OH God...please don't be feathered...that will break the budget of our show as 
ALL our theropods may need feathers.  CURSE YOU SCIENCE!!!! 


  This guy really owns up to the Carcharodonto part of his group.  Not only 
does 

it have shark like teeth, it now has a dorsal fin.

D
On Sep 8, 2010, at 11:33 AM, David Marjanovic wrote:

> > and a series of small bumps on the ulna. We think that these bumps
>> are homologous to quill knobs present on some modern birds; the knobs
>> are related to the insertion area of follicular ligaments that anchor
>> the roots of the flight feathers (remiges) to the arm. We propose
>> that *Concavenator* has integumentary follicular structures inserted
>> on the ulna, as in modern birds. Because scales do not have
>> follicles, we consider the structures anchored to the *Concavenator*
>> arms to be non-scale skin appendages homologous to the feathers of
>> modern birds. If this is true, then the phylogenetic bracket for the
>> presence of non-scale skin structures homologous to feathers in
>> theropod dinosaurs would be extended to the Neotetanurae, enlarging
>> the scope for explaining the origin of feathers in theropods.
> 
> Leaves me speechless with excitement!!!